Why do intelligent people have more zinc and copper in their brain

oh is that a fact?

or perhaps it's the other way around. if you have a more copper and zinc rich diet then you are more intelligent. time to eat some coins!!!

So the unintelligent people can decapitate them & sell their clever heads at the local scrap yard for more cash.

Well there isn't much more the unintelligent people can do for cash is there?

I'd presume it's the other way round; people with more zinc and copper in the brain will be more intelligent. It's probably used for neural pathways.